I'm a Hoosier (term used loosely, refering to living in Indiana... not to be confused with those attending "the school down south" as we call it) and a lot of people around here call it "pop." I dunno... maybe I call it soda because I like doing things a little different. I suppose it doesn't make that much difference, though, since I only drink Cherry Coke from the fountain, and I call it Cherry Coke.
Samik.